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STD 12 - 8. microbes in human welfare — BIOLOGY STD 12 Science — Question

Rajasthan BoardEnglish MediumSTD 12 ScienceBIOLOGYSTD 12 - 8. microbes in human welfare1 Mark
MCQ
Secondary treatment of sewage
  • A
    Removes grit and large pieces of organic matter
  • B
    Involves shredding, churning, filtration and sedimentation
  • C
    Does not require aeration
  • ✓
    Involves microbial digestion of organic matter
✓

Answer

Correct option: D.
Involves microbial digestion of organic matter
d
Secondary treatment of sewage involves microbial digestion of organic matter.

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